National Road Traffic Act, 1996 (Act No. 93 of 1996)
National Road Traffic Regulations, 2000
Chapter X : Rules of the Road and Matters Relating Thereto
Part II : Driving signals and signals for the control of traffic
327. Signal to indicate intention to reduce speed
Subject to the provisions of regulation 323(2)(d), the driver of a vehicle on a public road who intends to stop or to reduce speed suddenly shall before doing so extend his or her right arm sideward from the shoulder with the forearm held in a vertical and upward position and the palm of the hand turned to the front: Provided that the provisions of this regulation shall not apply to the driver of a vehicle fitted with a stop lamp complying with the provisions of regulation 169.